HomeForumsTechnical – GeneralSuspensionfitting koni inserts to gm struts guide vn/vz

This topic contains 50 replies, has 9 voices, and was last updated by Profile photo of sands vs sands vs 1 year, 7 months ago.

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  • #5863
    Profile photo of sands vs
    sands vs
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    Member since: March 1, 2015
    Posts: 613

    Hi guys,

     

     

    Im fitting konis to my vs and thought I would put up my research to help others

     

    link

    http://www.druidhillroad.com/projects/koni/

     

     

     

     

    They dont do a full strut so you have to modify a genuine holden strut to suit to accept the insert

     

     

    Like so starts like this stock gm shock

    then drill out base to drain oem fluid and gas

    cut the top off

     

     

    measure and insert koni shock.. put bolt through base which when done up draws the cartridge in

    video if anyones interested

     

     

    • This topic was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    • This topic was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    • This topic was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    • This topic was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    • This topic was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    • This topic was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    #5870
    Profile photo of VRSenator065
    VRSenator065
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    Nice work :good:

    #5878
    Profile photo of IJ.
    IJ.
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    I part mine off in the Lathe then centre drill the hole, just means you don’t need as a big a hole to allow for “wobbly hands”

    #5885
    Profile photo of sands vs
    sands vs
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    That would be great would love to do it that way.. unfortunately I dont have access to a laithe that will be big enough for that kind of job… So it will be pipe cutter and drill :stress:

    #5893
    Profile photo of sands vs
    sands vs
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    some vids show and some dont.. any idea if they have internal bump stops or you need to trim down the originals like in the second vid??

    #5895
    Profile photo of IJ.
    IJ.
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    some vids show and some dont.. any idea if they have internal bump stops or you need to trim down the originals like in the second vid??

    Do you mean the Koni’s?

    If so no they don’t you need to reuse the originals, I’d go as far as saying buy some new ones as I had one split on the Gt Ocean road and destroy the shock when it bottomed out, it broke the piston off the end of the shaft so it was a long slow Pogo Ride home…

    #5897
    Profile photo of sands vs
    sands vs
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    Yeah for the koni inserts I have heard they dont use one at all as they have internal bump stops, But on the video it shows the origionals being trimmed

    #5931
    Profile photo of sands vs
    sands vs
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    Well change of plans this happened last night…….

     

     

    They may end modding these to fit konis at a later date anyway..

    • This reply was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    #6331
    Profile photo of sands vs
    sands vs
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    So whats peoples thoughts on the ride of these concerned they will be too harsh for a street car.?

     

    Apparently they are a 9 pound coil

     

     

    think its worth trying to get a lower pound coil and or change to progressive rate spring? Where would i be best to source these.

    • This reply was modified 5 years, 4 months ago by Profile photo of sands vs sands vs.
    #9767
    Profile photo of sands vs
    sands vs
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    Ok so I cant work out what coils are in it but from contacting kings. There spring rates in progressive are 180-230lb.. So as for fixed they only sell fixed so they suggested 225lb springs. They are 4kg so thats what I will be using.

     

     

    Does anyone know if I have to change the spring helpers to match as well?

    #9780
    Profile photo of IJ.
    IJ.
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    No the Helpers are just there to keep the springs captive when fully extended.

    #9782
    Profile photo of VRSenator065
    VRSenator065
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    No the Helpers are just there to keep the springs captive when fully extended.

    Can you tell me a little more about this.  When I adjust my front down to the ride height I want the springs arent pre loaded at all and potentially rattle around under no load, it full extension or on the hoist.  I assume you shouldn’t run them like this.  Is this what these additional springs are about?

    #9784
    Profile photo of IJ.
    IJ.
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    No the Helpers are just there to keep the springs captive when fully extended.

    Can you tell me a little more about this. When I adjust my front down to the ride height I want the springs arent pre loaded at all and potentially rattle around under no load, it full extension or on the hoist. I assume you shouldn’t run them like this. Is this what these additional springs are about?

    Yep that’s exactly what they do, they’re designed to run “flat” when compressed, I think mine are like 40Lb rate so easily compressed by hand, they open back up when the shock is fully extended to prevent the Main springs dropping off their seats and causing damage, the only other way to do it is with a short stroke Shock that matches the Spring’s length.

    #9786
    Profile photo of Phire aka Gmfan
    Phire aka Gmfan
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    Member since: March 3, 2015
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    No the Helpers are just there to keep the springs captive when fully extended.

    Can you tell me a little more about this. When I adjust my front down to the ride height I want the springs arent pre loaded at all and potentially rattle around under no load, it full extension or on the hoist. I assume you shouldn’t run them like this. Is this what these additional springs are about?

    I thought your xyz coilovers were like my bc’s where height adjustment is independent of the lower spring seat? Basically preload the spring then all height adjustment is done by adjusting the height of the lower mount in relation to coilover body?

    #9787
    Profile photo of VRSenator065
    VRSenator065
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    Not sure exactly what you mean (tbh I have little experience with adjustables).  But I basically adjust the yellow ring at the bottom of the spring in this pic, basically the lower I screw it, the lower the car sits but I get to a point just above the ride height I would like ideally where the spring is no longer pre loaded at all.

    #9788
    Profile photo of LF24
    LF24
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    Gary the xyz coilovers you adjust the height independently to the spring height.  The spring is preloaded slightly with the lower spring seat then you can adjust the coilovers to any height with the bottom ring against the shock body!

    Pedders explains it pretty well

    #9789
    Profile photo of VRSenator065
    VRSenator065
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    Far out, how bloody dumb am I!!  I didn’t realize that’s the way its done!!!  Thanks very much for that, much appreciated.

    #9923
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    sands vs
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    <p style=”text-align: left;”>Back on topic.</p>
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    <p style=”text-align: left;”></p>
    <p style=”text-align: left;”>Here is some assembled pics</p>
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    <p style=”text-align: left;”></p>
    <p style=”text-align: left;”></p>

    #9930
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    sands vs
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    #12068
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    sands vs
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    Ok so making  coilovers from gm struts and a sleeve kit..

     

    I know these will work just unsure what size to use

    http://www.otomoto.com.au/c/4037307/1/sleeve-kits.html

     

    These are a lot cheaper any ideas if these will work? I dont need springs

    http://www.summitracing.com/int/search/product-line/qa1-coil-over-sleeves

     

     

    Information to help others the kit you need is 55mm.

    The sleeve length is 150mm

    • This reply was modified 4 years, 9 months ago by Profile photo of sands vs sands vs.
    • This reply was modified 4 years, 9 months ago by Profile photo of sands vs sands vs.
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